Meaning trap

come in

become available or useful

to become available, be received, or start being useful or important.

phrasal verbB2occasional

Don't mix these meanings

Same phrase, different job.

become available or useful

to become available, be received, or start being useful or important.

come in (enter (a place))

Another meaning of 'come in' is 'enter (a place)'; compare the examples to keep the meanings separate.

Notice where the phrase sounds natural.

This phone charger will come in handy when we travel.work
Learning how to manage your time can really come in useful when you have a lot of assignments to complete.IELTS speaking

Pattern: come in (useful/handy/first/last)

WrongThis will come handy one day.

RightThis will come in handy one day.

The phrase is 'come IN handy' — don't drop 'in'.

Patterncome in (useful/handy/first/last)

Choose the version that sounds natural in speech.

Stiff A torch would prove extremely useful in this situation.

Natural A torch would really come in handy here.

'Come in handy/useful' is the set phrase; 'prove extremely useful' is formal.

Words that usually travel with it.

'Come in' here does not mean physically entering a place.

come in (enter (a place)) — Another meaning of 'come in' is 'enter (a place)'; compare the examples to keep the meanings separate.